 body {
            font-family: 'Arial', sans-serif;
            max-width: 900px;
            margin: 0 auto;
            padding: 20px;
            line-height: 1.6;
            color: #333;
        }
        h1 {
            color: #2c3e50;
            text-align: center;
            margin-bottom: 30px;
            border-bottom: 2px solid #3498db;
            padding-bottom: 10px;
        }
        .input-section {
            background-color: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            box-shadow: 0 2px 4px rgba(0,0,0,0.1);
            margin-bottom: 30px;
        }
        label {
            display: block;
            margin-bottom: 8px;
            font-weight: bold;
            color: #2c3e50;
        }
        textarea {
            width: 100%;
            height: 150px;
            padding: 12px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            resize: vertical;
            margin-bottom: 15px;
        }
        .params {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            margin-bottom: 15px;
        }
        .param-group {
            flex: 1;
            min-width: 200px;
        }
        input[type="number"] {
            width: 100%;
            padding: 8px;
            border: 1px solid #ddd;
            border-radius: 4px;
        }
        button {
            background-color: #3498db;
            color: white;
            border: none;
            padding: 12px 24px;
            font-size: 16px;
            border-radius: 4px;
            cursor: pointer;
            transition: background-color 0.3s;
            display: block;
            margin: 0 auto;
        }
        button:hover {
            background-color: #2980b9;
        }
        .error {
            color: #e74c3c;
            background-color: #fadbd8;
            padding: 15px;
            border-radius: 4px;
            margin: 20px 0;
            border-left: 4px solid #e74c3c;
        }
        .result-section {
            margin-top: 30px;
        }
        .plot-container {
            border: 1px solid #ddd;
            border-radius: 8px;
            padding: 20px;
            margin: 20px 0;
            background-color: white;
            box-shadow: 0 2px 4px rgba(0,0,0,0.05);
        }
        table {
            width: 100%;
            border-collapse: collapse;
            margin: 25px 0;
            box-shadow: 0 2px 3px rgba(0,0,0,0.1);
        }
        th, td {
            padding: 12px 15px;
            text-align: center;
            border: 1px solid #ddd;
        }
        th {
            background-color: #3498db;
            color: white;
            font-weight: bold;
        }
        tr:nth-child(even) {
            background-color: #f2f2f2;
        }
        tr:hover {
            background-color: #e6f7ff;
        }
        .examples {
            margin: 20px 0;
            padding: 15px;
            background-color: #e8f4f8;
            border-radius: 8px;
            border-left: 4px solid #3498db;
        }
        .examples h3 {
            margin-top: 0;
            color: #2c3e50;
        }
        .example-btn {
            background: none;
            border: none;
            color: #3498db;
            text-decoration: underline;
            cursor: pointer;
            padding: 0;
            margin-right: 15px;
            font-size: 14px;
        }
        .example-btn:hover {
            color: #2980b9;
        }